Planning on setting up an urban community garden? Looking to buy a new piece of property to build your homestead? Keep in mind the possible issues and toxic dangers of the land you are going to be using before you start. Your garden produce may not be as healthy for you as you hoped for. Take steps to mitigate your risk.
http://www.treehugger.com/green-food/toxic-tomatoes-what-urban-gardeners-should-know.html